Calibration, qualification, and validation

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Fast and Reliable Environmental Analysis of Aldehyde and Ketone Air Pollutants

Aldehydes and ketones are ubiquitous air pollutants. Along with esters and ethers, they are major components of indoor air pollution and are therefore important for industrial hygiene applications.

Sildenafil Citrate USP Method Using HPTLC Plates for the Limit of Imidazole Test

In the present study we demonstrate compliance of silica gel 60 F254 HPTLC plates with USP requirements, and how HPTLC plates are suitable for the Sildenafil citrate-Limit of Imidazole test.

EN 14105: GC Analysis of Glycerin Impurity in Biodiesel on MET-Biodiesel

GC Analysis of Bacterial Acid Methyl Esters (BAMEs) on Equity®-1

Protocol for GC Analysis of Bacterial Acid Methyl Esters (BAMEs) on Equity®-1

New GC-MS Method for Mycotoxin Analysis

An article regarding A New GC-MS Method for Mycotoxin Analysis Using 13C-marked Mycotoxin Derivatives from Sigma-Aldrich.com

Extraction and Analysis of Lasix (Furosemide) in Horse Serum

Studies have suggested that there is a correlation between furosemide and improved racing performance, prompting the horse racing industry to monitor the use of this drug

Developing a Quantitative SPME Method

Quantitative NMR for Content Assignment of Reference Standards for Quality Control of Herbal Medicinal Products

qNMR has proven to be appropriate as a primary analytical method for the certification of natural products as reference standards for QC of herbal medicinals.

Derivatization of Fatty acids to FAMEs

Explore how GC can be used to analyze fatty acids either as free fatty acids or as fatty acid methyl esters.

GC Analysis of Bacterial Acid Methyl Esters (BAMEs) on SUPELCOWAX® 10 (15 m x 0.10 mm I.D., 0.10 µm), Fast GC Analysis

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GC Analysis of Grob Test Mix SLB IL76i

GC Analysis of Grob Test Mix on SLB®-IL76i

GC Analyses of Free Fatty Acids

GC Analysis of FAMEs in Five Edible Oils (Canola, Lard, Palm, Soybean, and Sunflower Seed) on SLB^®-IL111

GC Analysis of FAMEs in Five Edible Oils (Canola, Lard, Palm, Soybean, and Sunflower Seed) on SLB®-IL111

GC Analysis of FAMEs in Canola Oil on SLB-IL111

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Analysis of Isocyanates Using the ASSET™ EZ4-NCO Dry Sampler

The unique sampler design ensures that both the vapor phase and particulate isocyanates are captured and derivatized during sampling.

FAME Standard for Optimizing GC System Performance

AOCS and AOAC methods for determining the trans fatty acid composition of foods by gas chromatography require the use of a highly polar cyanosilicone capillary column to provide the best peak resolution attainable of the numerous geometric (cis & trans)

Production of 15N-13C Dual-labelled Proteins

Dr. Alan Robertson and Dr. Ben Davis at Vernalis, Ltd., UK, a provider of drug discovery and development services, have refined a novel protocol for the duallabelling of proteins using EnPresso® B Defined Nitrogen-free.

GC Analysis of a 37-Component FAME Mix on SP™-2560

A protocol for GC Analysis of a 37-Component FAME Mix on SP™-2560.

GC Analysis of a 37-Component FAME Mix on SP™-2560, Slower Oven Ramp

GC Analysis of a Grain Fatty Acid Methyl Ester (FAME) Mix on SP™-2560

-11-eicosenoate; Methyl elaidate; Methyl linoleate; Methyl myristate; Methyl myristoleate; Methyl palmitate; Methyl palmitoleate; Methyl oleate; Methyl pentadecanoate; Methyl tridecanoate; Methyl behenate; Methyl caprylate; Methyl erucate; Methyl heptadecanoate; Methyl arachidate

Analysis of Alkylphenols and Alkylphenol Ethoxylates Using new 13C-Labeled and Deuterated Internal Standards According to ISO 18857-2

Alkylphenols are starting materials for the synthesis of alkylphenol ethoxylates, which are widely used as non ionic tensides, dispersive agents in paper and leather manufacturing, emulsifiers for pesticide formulations and as auxiliary agents for drilling and flotation.

Thin Layer Chromatography Identification Test for Dextromethorphan following European Pharmacopeia Monograph on Silica Gel G 254 Plates

Silica gel G 254 plates are suitable for analysis of Dextromethorphan following the European pharmacopeia monograph.

Allergenic Fragrance Testing – New Certified Reference Materials and GC-FID/GC-MS Application

Last year, the International Fragrance Association (IFRA) published a new method for the testing of 57 potentially allergenic fragrances. We introduce two new dedicated certified reference materials (CRMs) and their analysis by GC using an ionic liquid capillary column, providing

LC/MS (TOF) Analysis of Drugs and Their Glucuronide Metabolites in Urine on Titan™ C18 After Solid Phase Extraction (SPE) Using Supel™-Select SCX, β-Glucuronidase Enzyme Digestion

-THC solution, 1.0 mg/mL in methanol, ampule of 1 mL, certified reference material

LC/MS/MS Analysis of Aflatoxins in Cannabis on Ascentis® Express 2.7µm Phenyl-Hexyl after Cleanup Using Supel™ Tox AflaZea SPE

solution, 2 μg/mL in acetonitrile, analytical standard

Fast GC Analysis of Detailed cis/trans Fatty Acid Methyl Esters (FAMEs) on the 75 m SP™-2560 Capillary Column

GC Analysis of a 37-Component FAME Mix on Equity^™-1 (15 m x 0.10 mm I.D., 0.10 μm), Fast GC Analysis

gc-analysis-of-a-37-component-fame-mix-g004278

Analytical Standards of Boswellic Acids and Their Separation

We offer six boswellic acids as analytical standards and two neat standards of α+β mixtures for use in research and quality control.

Identification, Assay and Organic Impurity Profiling Methods for Aripiprazole following the United States Pharmacopeia Monograph

Aripiprazole is an atypical antipsychotic and a partial dopamine agonist. It is primarily used in the treatment of schizophrenia, bipolar disorder, major depressive disorder, tic disorders, and irritability associated with autism. Aripiprazole was first approved by the U.S. Food and

Rapid, Sensitive, and Quantitative LC/MS/MS Determination of Digitoxin and Digoxin in Plasma

Immunoassay-based methods for digitoxin or digoxin exist, but are time consuming, labor intensive, and not selective due to similarities in their chemical structures.

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